COMPLIANCE WITH THIS - Air Force Link

22 AFI11-301V2 20 DECEMBER 2013
should be removed from service. (T-1)
2.10.3.4. Block Zero Plus (Block 0+) Spectacle (Model B) and Clip-on (Model D).
2.10.3.4.1. Block 0+ laser protective devices were procured as COTS items in FY02
and were available in two configurations; an Air Force Frame spectacle and a clip-on
device. The spectacle and clip-on have two lenses constructed of a polycarbonate
optical element. There is a polycarbonate element on the outer surface and a
polycarbonate optical element on the inner surface. A thin film containing laser
protective properties is bonded between polycarbonate elements and laminated
together to form the lenses. Lenses are glazed into frame and etched with a serial
number. Each spectacle lens is custom fitted to the frame and is not interchangeable.
(T-1)
2.10.3.4.2. Block 0+ ALEP devices provide laser protection by reflecting and
absorbing a percentage of incident radiation. This device can minimize temporary
effects of dazzle or glare and prevent permanent eye damage from lasers in selected
visible and invisible spectral regions. Housed in Air Force Frame (AFF), Block 0+
ALEP extends capability of Block 0 by adding additional bands of protection. Also,
Block 0+ ALEP is provided as a clip-on for aircrew members who wear prescription
spectacles. Clip-on spectacles are attachable to standard medium size 55mm AFF. For
additional information on protective characteristics of this device, contact HQ
ACC/A3TOA, Langley AFB VA. (T-1)
2.10.3.4.3. Block 0+ ALEP added protection beyond Block 0 and are certified safe
for flight. Wearing Block 0+ may result in a slight change in appearance of some
colors. However, any pair of spectacles observed to promote excessive reflection or
color shifts should be annotated and removed from service. Spectacles should not be
exposed to temperatures below - 4°F or above 131°F. (T-1)
2.10.3.4.4. Block 0+ spectacles must be fitted using the following procedures:
2.10.3.4.4.1. Fit spectacles as close to face as possible with minimal gaps
between the frame and side of the nose. The nose pads can be adjusted with
needle nose pliers to minimize gaps, reduce entrance of stray radiation and
improve comfort. The temple arms should press lightly against side of the head
and earpieces should curve downward following back of the ear to prevent
spectacles from sliding out of position. (T-1)
2.10.3.4.4.2. Block 0+ Clip-On (Model D) is designed to attach to outer surface
of the new AFF aircrew spectacle 55 mm frame. Clip-on attachment hooks should
tightly "grasp" spectacle frame. Do not attempt to attach the clip-on to older style
aircrew frame. Doing so will damage clip-on and create a foreign object damage
(FOD) hazard. (T-1)
2.10.3.4.5. Users requiring prescription capability have two options available. (T-1)
2.10.3.4.5.1. Option 1: A combination of contact lens and the Model B spectacle.
(T-1)
2.10.3.4.5.2. Option 2: A combination of aircrew prescription spectacles and
Model D clip-on. While this option provides the required capability, it adds